n the act of changing one thing or position for another
v change over, change around, as to a new order or sequence
v exchange or give (something) in exchange for
v lay aside, abandon, or leave for another
v make a shift in or exchange of; then we switched"
v cause to go on or to be engaged or set in operation
v flog with or as if with a flexible rod
v reverse (a direction, attitude, or course of action)